Composition for exterminating canada thistles



UNITED. STATES PATENT OFFICE.

RICHARD B. HULL, MILTON JUNCTION, WISCONSIN.

COMPOSITION FOR EXTERMINATING CANADA THISTLES.

SPECIFICATION forming part of Letters Patent No. 517,861, dated April 10, 1894. Application filed December 19,1893. Serial No- 494,098- (No specimens.)

turpentine, four ounces; pine tar, one ounce;

butyrio ether, one-half ounce.

The ingredients are mixed as follows: Dissolve the tar in the bi-sulphide of carbon, then add the turpentine and mingle thoroughly by agitation. Next add the butyric ether and let the compound stand twenty-four hours, when it is ready for use.

In practice, the compound may be applied as an internal injection, if the thistle is hol- :0 low, or it can be poured upon the stalk and allowed to run down upon it.

What I claim is The herein described composition of matter to be used in exterminating Canada thistles, 25 consisting of bi-sulphide of carbon, turpentine, pine tar, and butyric ether, combined substantially in the proportions specified.

In testimony of all which I have hereunto subscribed my name.

RICHARD B. HULL.

Witnesses:

M. A. RICHARDSON, R. N. BROWN. 

